use strict;
use warnings;

while (<DATA>) {
    s/\s+$//;
    my ($type, @defs) = split /\(\d+\)/,$_;
    print "\n------ Word type: $type\n";
    @defs = grep { ! m{\(arch\)} } @defs;
    print "\t$_\n" for @defs;
}
__DATA__
(n,vs) (1) look; glimpse; glance; (vs) (2) to glance; to glimpse; (3) (arch) first meeting; (adv) (4) apparently; seemingly;
(n-t,n-adv) (1) moment; a (short) time; a while; (2) former times; (3) (arch) two-hour period;