hrívë noun "winter", in the calendar of Imladris a precisely defined period of 72 days, but also used without any exact definition (Appendix D). Yá hrívë tenë, ringa ná "when winter comes (arrives, is with us), it is cold" (VT49:23; Tolkien changed tenë to menë, p. 24). The word Hrívion, heading a section of the poem The Trees of Kortirion that has to do with the "fading time", would seem to be related (LT1:42)
Quenya
ten-
go as far as
ten-
verb. to arrive, come to
hrívë
winter
hrívë
noun. winter
Hesin
winter
Hesin noun "winter" (LT1:255; LotR-style Quenya has hrívë instead)
Yelin
winter
Yelin noun "winter" (LT1:260; LotR-style Quenya has hrívë, and Yelin was probably obsoleted together with the adjective yelwa_ "cold", that appears with a different meaning in the Etymologies)._
appa-
touch
appa- vb. "touch" (in the literal sense; contrast #ap-, q.v.) (VT44:26)
hríve
noun. winter
[ten- (3) vb. "go as far as", 1st person sg. aorist tenin, (tenin coaryanna "I arrive at [or come/get to] his house"), endingless aorist tenë, present tense téna- "is on point of arrival, is just coming to an end", past tense tennë "arrived, reached", in this tense usually with locative rather than allative: tennen sís "I arrive[d] here", perfect eténië "has just arrived", future tenuva "will arrive".] (VT49:23, 35, 36; Tolkien emended the initial consonant from t to m throughout)